119 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \  argument
123 	  ((char __user *)(ucmsg) - (char __user *)(mhdr)->msg_control_user)))
142 	struct compat_cmsghdr __user *ucmsg;  in cmsghdr_from_user_compat_to_kern()  local
153 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
154 	while (ucmsg != NULL) {  in cmsghdr_from_user_compat_to_kern()
155 		if (get_user(ucmlen, &ucmsg->cmsg_len))  in cmsghdr_from_user_compat_to_kern()
159 		if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
162 		tmp = ((ucmlen - sizeof(*ucmsg)) + sizeof(struct cmsghdr));  in cmsghdr_from_user_compat_to_kern()
165 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);  in cmsghdr_from_user_compat_to_kern()
182 	ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);  in cmsghdr_from_user_compat_to_kern()
183 	while (ucmsg != NULL) {  in cmsghdr_from_user_compat_to_kern()
185 		if (copy_from_user(&cmsg, ucmsg, sizeof(cmsg)))  in cmsghdr_from_user_compat_to_kern()
187 		if (!CMSG_COMPAT_OK(cmsg.cmsg_len, ucmsg, kmsg))  in cmsghdr_from_user_compat_to_kern()
189 		tmp = ((cmsg.cmsg_len - sizeof(*ucmsg)) + sizeof(struct cmsghdr));  in cmsghdr_from_user_compat_to_kern()
197 				   CMSG_COMPAT_DATA(ucmsg),  in cmsghdr_from_user_compat_to_kern()
198 				   (cmsg.cmsg_len - sizeof(*ucmsg))))  in cmsghdr_from_user_compat_to_kern()
203 		ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, cmsg.cmsg_len);  in cmsghdr_from_user_compat_to_kern()